{"id":"CVE-2021-29439","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-29439","generatedAt":"2026-10-28T01:49:19.485Z","title":"By installing the right plugin, an attacker can obtain an arbitrary code execution primitive and elevate their privileges on the instance.","description":"The Grav admin plugin prior to version 1.10.11 does not correctly verify caller's privileges. As a consequence, users with the permission `admin.login` can install third-party plugins and their dependencies. By installing the right plugin, an attacker can obtain an arbitrary code execution primitive and elevate their privileges on the instance. The vulnerability has been addressed in version 1.10.11. As a mitigation blocking access to the `/admin` path from untrusted sources will reduce the probability of exploitation.","published":"2021-04-13T20:15:22.000Z","lastModified":"2026-06-17T03:47:39.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-863"],"affected":["getgrav/grav admin"],"epss":{"score":0.02587,"percentile":0.85151,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/getgrav/grav-plugin-admin/commit/a220359877fd1281f76ba732e5308e0e3002e4b1","source":"security-advisories@github.com"},{"url":"https://github.com/getgrav/grav-plugin-admin/security/advisories/GHSA-wg37-cf5x-55hq","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/getgrav/grav-plugin-admin/commit/a220359877fd1281f76ba732e5308e0e3002e4b1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/getgrav/grav-plugin-admin/security/advisories/GHSA-wg37-cf5x-55hq","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29439","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}